Via [url=http://blog.counter-strike.net/index.php/2017/08/19233/]the CS:GO blog[/url]:

[quote=Valve]The following changes from “1.35.9.7-rc1” are now live.
[ GAMEPLAY ]
– Shipping initial changes to pistols with the goal of emphasizing skillful use of the weapons, beginning with the Tec-9.
— Tec-9: The Tec-9 has been adjusted to emphasize aiming while retaining the weapon’s high mobility. The current changes include:
– – slightly improved accuracy when taking a single shot
– – significantly reduced accuracy when firing rapidly
– – magazine and reserve ammo reduced to 18 and 90, respectively
– Extended the existing camera height restriction system to include cases where a player is in the air, preventing the first-person camera from rising above their third-person head.
– Players will now make a landing sound if they un-crouch while crouch-jumping.
– Fixed several inconsistencies where sounds were not broadcast when a player was occluded by a wall. (Thanks, simpleavaster!)
[ LINUX ]
– Cleaned up the way CS:GO launches so there is one fewer process[/quote]

Rumor has it:

- If you want proof it's live, [url=https://github.com/SteamDatabase/GameTracking-CSGO/commit/619278bf2707ae3350fda04b8c9ffc0d1d5cb896]here it is[/url]

- Size is ~10 MB